His catch percentage is irrelevant, that's mostly a QB/system stat.
WRs make big vertical plays in the passing game and open space for other guys. Tight ends don't.
The NFL isn't fantasy football. The TE's have a different role than a WR in the offense. And every team uses them. You haven't discovered a revolutionary way to look at offensive football that all NFL coaches have somehow missed.
And, BTW, not all NFL WR's make a lot of "big vertical plays". There is room for WR's (and TE's) to fill different roles in an offense. It's not schoolyard football where plays are set up for everyone to go deep. Guys like Edleman, Welker and many others have been very important players based on being possession receivers who specialize in finding open seems and underneath routes that keep an offense on the field and driving downfield.
And, BTW, if catch % doesn't matter, neither does drop %, because both are calculated based on passes that are considered reasonably catchable.